CN212108363U - Atmospheric hot water boiler - Google Patents
Atmospheric hot water boiler Download PDFInfo
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- CN212108363U CN212108363U CN202020612916.3U CN202020612916U CN212108363U CN 212108363 U CN212108363 U CN 212108363U CN 202020612916 U CN202020612916 U CN 202020612916U CN 212108363 U CN212108363 U CN 212108363U
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- hot water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model discloses an ordinary pressure hot water boiler relates to coal combustion apparatus field. The normal-pressure hot water boiler comprises a combustion heat exchange device, a denitration device, a secondary heat exchange device, a dust removal device and a desulfurization device. The combustion heat exchange device comprises a combustion part and a heat exchange part, the combustion part is used for combusting fuel to generate flue gas, and the heat exchange part is used for carrying out primary heat exchange with the flue gas; the denitration device is arranged behind the combustion heat exchange device to denitrate the flue gas; the secondary heat exchange device is arranged behind the denitration device to carry out secondary heat exchange on the flue gas; the dust removal device is arranged behind the combustion heat exchange device or behind the secondary heat exchange device and is used for removing dust from the flue gas; the desulfurizing device is arranged in the combustion heat exchange device or at the outlet of the boiler and is used for desulfurizing the flue gas. This ordinary pressure boiler can realize the clean burning of coal, and sets up secondary heat transfer device and utilize the waste heat, has improved energy utilization.
Description
Technical Field
The utility model relates to a coal combustion apparatus field, concretely relates to ordinary pressure boiler.
Background
Aiming at the clean heating market in small area ranges such as small town communities, governments, old homes, schools, villages and the like which do not have centralized heating, the small normal-pressure hot water boiler has huge demand and can be used as an effective supplement for gas boilers and electric boilers, and the clean coal efficient environment-friendly hot water boiler still has good market prospect.
According to the difference of the types of the coal, the flue gas generated by coal combustion contains more or less harmful substances such as nitrogen oxides, sulfides, particle floating dust and the like, and if the flue gas is not purified and is directly discharged into the atmosphere, the environment pollution is caused, and the human health is harmed. At present, the traditional normal-pressure hot water boiler for heating in small areas has no matched flue gas purification device or the existing simple purification device can not fully purify the flue gas, and the flue gas can not meet the practical problems of pollutant emission standards and the like, so that the popularization and the application of the traditional normal-pressure hot water boiler are restricted.
Therefore, there is a need for an atmospheric hot water boiler to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pair of ordinary pressure hot water boiler's aim at can fully realize the clean burning of fuel to the gas cleaning that fuel burning produced, and further improved energy utilization.
To achieve the purpose, the utility model adopts the following technical proposal:
an atmospheric hot water boiler comprising:
the combustion heat exchange device comprises a combustion part and a heat exchange part, the combustion part is used for combusting fuel to generate flue gas, and the heat exchange part is used for carrying out primary heat exchange with the flue gas;
the denitration device is arranged behind the combustion heat exchange device and is used for denitration of the flue gas;
the secondary heat exchange device is arranged behind the denitration device and is used for carrying out secondary heat exchange on the flue gas;
and the dust removal device is arranged behind the combustion heat exchange device or behind the secondary heat exchange device and is used for removing dust from the flue gas.
And the desulfurizing device is arranged in the combustion heat exchange device or at the outlet of the boiler and is used for desulfurizing the flue gas.
Optionally, the dust removal device is arranged behind the secondary heat exchange device, and the dust removal device is used for removing dust from the flue gas after secondary heat exchange.
Optionally, the dust removing device is a dust removing pore plate, and filter particles are filled on the dust removing pore plate; the desulfurizing device is a desulfurizing pore plate, and a desulfurizing agent is filled on the desulfurizing pore plate; the desulfurization orifice plate is arranged behind the dedusting orifice plate.
Optionally, the dust removal device is a bag filter and is disposed between the secondary heat exchange device and the desulfurization device.
Optionally, the dust removal device and the denitration device are of an integrated structure, and the dust removal device is a ceramic fiber filter element type dust remover and is coated with a denitration catalyst.
Optionally, after the desulfurization device is arranged on the secondary heat exchange device, the desulfurization device is used for desulfurizing the flue gas after the secondary heat exchange.
Optionally, the desulphurization device is arranged in the combustion heat exchange device, and the desulphurization device is used for desulphurization of the flue gas in the combustion heat exchange device.
Optionally, the atmospheric hot water boiler further comprises a feeding device connected to the combustion section, the feeding device being configured to move fuel to the combustion section.
Optionally, the combustion section comprises an insulated overfire air duct configured to provide oxygen for the afterburning of the flue gas produced by the combustion section.
Optionally, the heat-insulation secondary air duct is filled with urea fine powder, and the urea fine powder is heated and decomposed to generate ammonia gas.
The utility model has the advantages that:
the utility model provides a pair of ordinary pressure hot water boiler is through setting up denitrification facility, desulphurization unit and dust collector to fully purify the flue gas that produces the fuel burning, realize the clean burning of fuel, and further set up secondary heat transfer device behind denitrification facility, in order to carry out the secondary heat transfer to the flue gas, improved energy utilization.
Drawings
Fig. 1 is a schematic view of an overall structure of an atmospheric hot water boiler according to a first embodiment of the present invention;
fig. 2 is a schematic view of an overall structure of an atmospheric hot water boiler according to a second embodiment of the present invention;
fig. 3 is a schematic view of an overall structure of an atmospheric hot water boiler according to a third embodiment of the present invention;
fig. 4 is a schematic view of the overall structure of an atmospheric hot water boiler according to a fourth embodiment of the present invention.
In the figure:
1. a combustion heat exchange device; 11. a combustion section; 111. a primary air chamber; 1111. a wind distribution plate; 112. a front arch plate; 113. a rear arch plate; 114. a heat-insulating secondary air duct; 115. a slag chamber; 12. a heat exchanging part; 121. a first heat exchange tube; 2. a denitration device; 21. a heat resistant support orifice plate; 3. a secondary heat exchange device; 31. a second heat exchange tube; 4. a dust removal device; 5. a desulfurization unit; 6. a first flue gas channel; 7. a feeding device; 8. a storage bin; 100. a first flange interface; 200. a second flange interface; 300. a third flange interface; 400. a fourth flange interface; 500. and a fifth flange interface.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Example one
As shown in fig. 1, the atmospheric pressure hot water boiler disclosed in this embodiment includes a combustion heat exchange device 1, a denitration device 2, a secondary heat exchange device 3, a dust removal device 4, and a desulfurization device 5, wherein the denitration device 2 is disposed behind the combustion heat exchange device 1, the secondary heat exchange device 3 is disposed behind the denitration device 2, the dust removal device 4 is disposed behind the secondary heat exchange device 3, and the desulfurization device 5 is disposed behind the dust removal device 4. Specifically, the combustion heat exchange device 1 comprises a combustion part 11 and a heat exchange part 12, wherein the combustion part 11 is used for combusting fuel to generate flue gas, and the heat exchange part 12 is used for carrying out primary heat exchange with the flue gas; the denitration device 2 is arranged at the downstream of the combustion heat exchange device 1 and is used for denitration of the flue gas subjected to primary heat exchange; the secondary heat exchange device 3 is arranged at the downstream of the denitration device 2 and is used for carrying out secondary heat exchange on the denitrated flue gas; the dust removal device 4 is arranged at the downstream of the secondary heat exchange device 3 and is used for removing dust from the flue gas after secondary heat exchange; and the desulfurization device 5 is arranged at the outlet of the boiler and at the downstream of the dust removal device 4 and is used for desulfurizing the flue gas subjected to dust removal and further discharging the desulfurized flue gas into the atmosphere. This ordinary pressure hot water boiler carries out abundant purification to the flue gas that the coal burning produced through setting up denitrification facility 2, dust collector 4 and desulphurization unit 5, realizes the clean burning of coal, and sets up secondary heat transfer device 3 and carries out the secondary heat transfer to the flue gas waste heat, has improved energy utilization.
It is understood that, in order to realize the combustion of fuel and the flow of flue gas in each part, a blower is installed at the tail part of the normal pressure hot water boiler so as to make the inside of the whole normal pressure hot water boiler in a negative pressure state.
Optionally, in order to make the fuel burn sufficiently, a primary air chamber 111 is arranged in the burning part 11, and the primary air chamber 111 can be arranged in a partition manner, so that the purpose of staged burning can be achieved through reasonable air distribution, and the fuel burning efficiency is improved.
Furthermore, an air distribution plate 1111 is arranged at an air outlet of the primary air chamber 111, and the air distribution plate 1111 can be in a strip shape, a hole shape, a conical shape or a square shape and the like, so that the purpose of reasonably distributing air is achieved, and the fuel is fully combusted;
optionally, a front arch 112 and a rear arch 113 are further disposed in the combustion heat exchange device 1, the front arch 112 and the rear arch 113 are mounted on the same horizontal plane, one end of each of the front arch 112 and the rear arch 113 is inclined upward α and β relative to the horizontal plane, the other end of each of the front arch 112 and the rear arch 113 is fixedly disposed on a side wall of the combustion heat exchange device 1, an internal space of the combustion heat exchange device 1 is divided into a lower combustion portion 11 and an upper heat exchange portion 12 by the front arch 112 and the rear arch 113, and a gap is left between the front arch 112 and the rear arch 113 to allow flue gas of the combustion portion 11 to enter. The front arch 112 and the rear arch 113 are made of a heat insulating material, and are mainly used for providing radiant heat for the combustion of fuel in the combustion section 11. According to different clean fuels, the inclination angle alpha of the front arch 112 and the inclination angle beta of the rear arch 113 are different and the length setting is also different, for example, the inclination angle alpha of the front arch 112 is small and is generally 10-30 degrees, the length is short, the inclination angle beta of the rear arch 113 is large and is generally 30-60 degrees, and the length is long; for bituminous coal briquette, the inclination angle alpha of the front arch plate 112 is large, generally 30-60 degrees, the length is short, the inclination angle beta of the rear arch plate 1113 is larger than the inclination angle alpha of the front arch plate 112, and the length is long.
Optionally, the combustion section 11 further comprises an insulated overfire air duct 114, the insulated overfire air duct 114 being configured to provide oxygen for the afterburning of the flue gas produced by the combustion section 11. Specifically, the heat-insulating secondary air duct 114 is provided with a plurality of air holes, and air is introduced by means of negative pressure inside the combustion heat exchange device 1 or a small-sized blower, so as to provide oxygen for secondary combustion of unburnt combustible substances in the flue gas generated by the combustion part 11. Further, the front arch 112 and the rear arch 113 are respectively disposed at two sides of the heat-insulating secondary air duct 114 so as to guide the high-temperature flue gas generated by the combustion portion 11 into the heat-insulating secondary air duct 114, and the high-temperature flue gas and the introduced air are fully mixed, disturbed and combusted through the heat-insulating secondary air duct 114. The heat-insulating secondary air duct 114 is designed to be a heat-insulating material, and can be made of casting material or heat-resistant steel so as to reduce heat loss. The flame of the combustion part 11 passes through the inside of the heat-insulation secondary air pipe 114 and is combined with the introduced air turbulence in the heat-insulation secondary air pipe 114, so that the purpose of high-efficiency mixing and combustion supporting is achieved.
Furthermore, the aperture ratio and the aperture size of the heat-insulation secondary air duct 114 can be determined according to the amount of flue gas, different styles can be set according to the fuel characteristics, such as anthracite, the volatility is low, the aperture and the aperture ratio of the heat-insulation secondary air duct 114 can be improved, and the air passing resistance is reduced; for example, the smoke-forming coal has high volatility, and the aperture ratio of the heat-insulating secondary air duct 114 need to be reduced, so that the purposes of turbulence, smoke elimination and dust reduction are achieved.
Further, the heat-insulating secondary air duct 114 contains urea fine powder, the urea fine powder is heated and decomposed in the combustion part 11 to generate ammonia gas, and the generated ammonia gas and the flue gas enter the denitration device 2 to complete denitration of the flue gas.
Further, in order to store the ash after the fuel is burnt out, the combustion part 11 further comprises a slag chamber 115, and the slag chamber 115 can meet the ash storage capacity of 12 hours under the rated thermal power of the boiler, so that the frequency of removing the slag by a user is reduced, and the slag is conveniently removed.
Further, a first heat exchange tube 121 is arranged in the heat exchange portion 12, the first heat exchange tube 121 is a water-cooling heat exchange tube and is provided with a plurality of tubes, and the first heat exchange tube 121 is mainly used for high-temperature heat exchange, and exchanges heat of high-temperature flue gas with the temperature of 700-950 ℃ in the combustion portion 11 to 280-420 ℃ so as to facilitate denitration of the denitration device 2 at the rear portion, and after heat exchange, hot water in the first heat exchange tube 121 is transmitted to each area to realize heating.
In order to realize automatic feeding of fuel and reduce user operation, the normal pressure hot water boiler further comprises a feeding device 7, wherein the feeding device 7 is connected with the combustion part 11, and the feeding device 7 is used for transferring the fuel to the combustion part 11. The feeding device 7 can select actuating mechanisms such as a piston type feeder, a single-wheel or double-wheel driving material pushing plate and the like, and the feeding device 7 is made to reciprocate once by setting a certain time interval, so that the feeding amount and the feeding period of fuel are controlled, and the heat supply stability of the boiler is improved.
Further, in order to store fuel, the normal pressure hot water boiler further comprises a storage bin 8, a discharge end at the bottom of the storage bin 8 is connected with a feeding device 7, and the feeding device 7 transfers the fuel extruded from the discharge end to a combustion part 11 through reciprocating motion. The volume of the storage bin 8 should satisfy the boiler rated heat power burning for more than 12 hours to ensure continuous heat supply, and the discharge end of the bottom of the storage bin 8 is smaller than the upper space of the storage bin 8 so as to facilitate the fuel flowing and conveying.
The denitration device 2 is internally provided with a heat insulation cavity, the bottom of the heat-resistant support pore plate 21 is arranged, a honeycomb denitration catalyst is filled in the heat insulation cavity and on the heat-resistant support pore plate 21, and the flue gas temperature of the part is 280-420 ℃, so that the part is in a temperature range with high reaction activity of the medium-temperature denitration catalyst, and the medium-temperature denitration catalyst is selected in the embodiment. The honeycomb type denitration catalyst can be a medium-temperature sulfur-resistant vanadium tungsten titanium series denitration catalyst commonly used in the market, ammonia gas and flue gas generated by pyrolysis of urea fine powder enter the denitration device 2 under the action of negative pressure of the combustion heat exchange device 1, and nitrogen oxides in the ammonia gas and the flue gas react on the surface of the honeycomb type medium-temperature denitration catalyst to generate nitrogen gas, so that the purpose of reducing the nitrogen oxides is achieved.
In order to facilitate the disassembly and replacement, the combustion heat exchange device 1 is connected with the denitration device 2 through a first flange interface 100.
Further, a second heat exchange tube 31 is arranged in the secondary heat exchange device 3 and used for carrying out secondary heat exchange with the denitrated flue gas, so that the fuel utilization rate is improved. The second heat exchange pipes 31 can be water pipes and are arranged in a transversely staggered manner; the second heat exchange tube 31 can also be a fire tube and is vertically arranged, and the periphery of the second heat exchange tube is provided with a water jacket; according to the flue gas quantity and the flue gas enthalpy value, the heat exchange area of the tail efficient heat exchange surface is determined, heat exchange is carried out on the flue gas at the temperature of 280-420 ℃, and the temperature of the flue gas after secondary heat exchange is ensured to be 100-150 ℃.
In order to facilitate the disassembly and replacement, the denitration device 2 is connected with the secondary heat exchange device 3 through a second flange interface 200.
The dust removal device 4 is communicated with the secondary heat exchange device 3, and the dust removal device 4 is used for removing dust from the flue gas after secondary heat exchange.
Specifically, the dust removing device 4 is a dust removing pore plate, and filter particles are filled on the dust removing pore plate, and can be ceramsite, bottom slag, quartz sand, waste desulfurizer and the like. The particle size is generally 1mm-3mm, the filling height of the filter type particles is determined according to wind resistance and smoke dust amount, and the filling height is generally 20cm-35 cm; the smoke dust amount in the smoke is reduced through filtering, interception, adsorption and the like; the filter type particles are cleaned regularly according to the wind resistance.
Correspondingly, desulphurization unit 5 is the desulfurization orifice plate, and the desulfurization orifice plate sets up in the low reaches of dust removal orifice plate to realize removing dust earlier then the desulfurization, improve desulfurization efficiency. The desulfurizing agent is filled on the desulfurizing pore plate, and because the flue gas temperature of the desulfurizing pore plate is 100-150 ℃, the desulfurizing agent is in the temperature range of high reaction activity of the low-temperature desulfurizing agent, the desulfurizing agent can be a strip-shaped low-temperature desulfurizing agent purchased in the market, such as a calcium-based absorbent containing one or more than two active components of manganese, copper, iron, zinc and the like in a certain proportion, and can adsorb sulfur dioxide in the flue gas at the temperature range of 90-120 ℃ so as to achieve the purpose of efficiently fixing sulfur. In the using process, the strip-shaped desulfurizer needs to be replaced regularly according to the coal burning quantity.
Dust removal orifice plate and desulfurization orifice plate all are fixed in 6 inner walls of first flue gas passageway, and for the dismouting and change of being convenient for, first flue gas passageway 6 is connected through third flange interface 300 with secondary heat transfer device 3. Further, the desulfurization hole plate is arranged at a fourth flange interface 400 near the tail end of the first flue gas channel 6, so that the desulfurized flue gas flows to the chimney through the fourth flange interface 400 to be discharged into the atmosphere.
The utility model provides a pair of ordinary pressure hot water boiler through setting up denitrification facility 2, desulphurization unit 5 and dust collector 4 to fully purify the flue gas that produces the fuel burning, realize the clean burning of fuel, and further set up secondary heat transfer device 3 at denitrification facility 2 rear, flue gas secondary heat transfer after to the denitration has improved energy utilization.
Example two
In this embodiment, the same portions as those in the first embodiment are given the same reference numerals, and the same description is omitted.
Fig. 2 is a schematic structural view of an atmospheric hot water boiler according to a second embodiment of the present invention. As shown in fig. 2, the atmospheric hot water boiler provided in the present embodiment has the following differences with respect to the first embodiment: the dust removing device 4 is a bag type dust remover and is arranged between the secondary heat exchange device 3 and the desulfurizing device 5. Specifically, the bag filter is arranged behind the secondary heat exchange device 3 and in the second flue gas channel, and is used for removing dust from the flue gas after the secondary heat exchange. One end of the second flue gas channel is connected with the secondary heat exchange device 3 through a third flange interface 300, and the other end of the second flue gas channel is connected with the first flue gas channel 6 through a fifth flange interface 500, so that the second flue gas channel can be assembled and disassembled conveniently.
Other structures in this embodiment are the same as those in the first embodiment, and are not described herein again.
EXAMPLE III
In this embodiment, the same portions as those in the first embodiment are given the same reference numerals, and the same description is omitted.
Fig. 3 is a schematic structural view of an atmospheric hot water boiler according to a third embodiment of the present invention. As shown in fig. 3, the atmospheric pressure hot water boiler provided in the present embodiment has the following differences with respect to the first embodiment: dust collector 4 and denitrification facility 2 formula structure as an organic whole, dust collector 4 is ceramic fiber filter core formula dust remover and coats with the denitration catalyst on it. Flue gas and ammonia gas that flow out through burning heat transfer device 1 accomplish the filtration dust removal and the denitration reaction of flue gas when ceramic fiber filter core formula dust remover, and the denitration reaction principle is corresponding with the embodiment one by one, and it is no longer repeated here.
Further, after the desulphurization device is arranged on the secondary heat exchange device 3, the desulphurization device 5 is used for desulphurization of the flue gas after the secondary heat exchange.
Other structures in this embodiment are the same as those in the first embodiment, and are not described herein again.
Example four
In this embodiment, the same portions as those in the embodiment are given the same reference numerals, and the same description is omitted.
Fig. 4 is a schematic structural view of an atmospheric hot water boiler according to a fourth embodiment of the present invention. As shown in fig. 4, the atmospheric pressure hot water boiler provided in the present embodiment has the following differences with respect to the third embodiment: the desulphurization device 5 is arranged in the combustion heat exchange device 1 and is used for desulphurization of the flue gas in the combustion heat exchange device 1. Specifically, the desulfurization device 5 is an in-furnace injection type desulfurization device, can be in a simple stock bin + spiral + injection pipe form, and makes the desulfurizing agent enter the combustion heat exchange device 1 by utilizing the negative pressure of the combustion heat exchange device 1 and the self weight of the desulfurizing agent; according to the actual use scene, the desulfurizer can also be sent into the combustion heat exchange device 1 by using compressed air or a Roots blower. The desulfurizer is generally 800-plus-1200-mesh slaked lime fine powder, reacts with sulfur dioxide in the flue gas to generate sulfate and the like, and is filtered and collected in fly ash on a ceramic fiber filter element type dust remover to realize flue gas desulfurization.
Further, the first flue gas channel 6 is removed, and the third flange interface 300 is connected with an external chimney to discharge flue gas after secondary heat exchange.
Other structures in this embodiment are the same as those in this embodiment, and are not described herein again.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (10)
1. An atmospheric hot water boiler, comprising:
the device comprises a combustion heat exchange device (1), wherein the combustion heat exchange device (1) comprises a combustion part (11) and a heat exchange part (12), the combustion part (11) is used for combusting fuel to generate flue gas, and the heat exchange part (12) is used for carrying out primary heat exchange with the flue gas;
the denitration device (2) is arranged behind the combustion heat exchange device (1) and is used for denitration of the flue gas;
the secondary heat exchange device (3) is arranged behind the denitration device (2) and is used for carrying out secondary heat exchange on the flue gas;
the dust removal device (4) is arranged behind the combustion heat exchange device (1) or behind the secondary heat exchange device (3) and is used for removing dust from the flue gas;
and the desulfurizing device (5) is arranged in the combustion heat exchange device (1) or at the outlet of the boiler and is used for desulfurizing the flue gas.
2. An atmospheric-pressure hot water boiler according to claim 1, wherein the dust removing device (4) is provided behind the secondary heat exchanging device (3), and the dust removing device (4) is used for removing dust from the flue gas after secondary heat exchange.
3. An atmospheric pressure hot water boiler according to claim 2, wherein the dust removing means (4) is a dust removing orifice plate filled with filter particles; the desulfurizing device (5) is a desulfurizing pore plate, and a desulfurizing agent is filled on the desulfurizing pore plate; the desulfurization orifice plate is arranged behind the dedusting orifice plate.
4. An atmospheric-pressure hot water boiler according to claim 2, wherein the dust removing device (4) is a bag-type dust collector and is disposed between the secondary heat exchanging device (3) and the desulfurizing device (5).
5. An atmospheric-pressure hot water boiler according to claim 1, wherein the dust removing device (4) is of an integral structure with the denitration device (2), and the dust removing device (4) is a ceramic fiber filter element type dust remover and is coated with a denitration catalyst.
6. An atmospheric-pressure hot water boiler according to claim 5, wherein the desulfurizing device (5) is provided after the secondary heat exchange device (3), and the desulfurizing device (5) is configured to desulfurize the flue gas after the secondary heat exchange.
7. An atmospheric-pressure hot water boiler according to claim 5, wherein the desulfurizing device (5) is provided in the combustion heat exchange device (1), and the desulfurizing device (5) is used for desulfurizing the flue gas in the combustion heat exchange device (1).
8. An atmospheric-pressure hot water boiler according to claim 1, further comprising a feeding device (7), the feeding device (7) being connected to the combustion section (11), the feeding device (7) being for transferring fuel to the combustion section (11).
9. An atmospheric-pressure hot water boiler according to claim 1, wherein the combustion section (11) comprises an insulated overfire air duct (114), the insulated overfire air duct (114) being configured to provide oxygen for the overfire of the flue gases produced by the combustion section.
10. An atmospheric hot water boiler according to claim 9, wherein the adiabatic overfire air duct (114) contains urea fines which are decomposed by heating to produce ammonia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020612916.3U CN212108363U (en) | 2020-04-22 | 2020-04-22 | Atmospheric hot water boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020612916.3U CN212108363U (en) | 2020-04-22 | 2020-04-22 | Atmospheric hot water boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212108363U true CN212108363U (en) | 2020-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020612916.3U Expired - Fee Related CN212108363U (en) | 2020-04-22 | 2020-04-22 | Atmospheric hot water boiler |
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| Country | Link |
|---|---|
| CN (1) | CN212108363U (en) |
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2020
- 2020-04-22 CN CN202020612916.3U patent/CN212108363U/en not_active Expired - Fee Related
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